52616665 has 4 divisors (see below), whose sum is σ = 63140004. Its totient is φ = 42093328.

The previous prime is 52616659. The next prime is 52616671. The reversal of 52616665 is 56661625.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (52616659) and next prime (52616671).

It can be written as a sum of positive squares in 2 ways, for example, as 40589641 + 12027024 = 6371^2 + 3468^2 .

It is a cyclic number.

It is not a de Polignac number, because 52616665 - 2¹⁷ = 52485593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5261662 + ... + 5261671.

It is an arithmetic number, because the mean of its divisors is an integer number (15785001).

Almost surely, 2^52616665 is an apocalyptic number.

It is an amenable number.

52616665 is a deficient number, since it is larger than the sum of its proper divisors (10523339).

52616665 is a wasteful number, since it uses less digits than its factorization.

52616665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10523338.

The product of its digits is 64800, while the sum is 37.

The square root of 52616665 is about 7253.7345553859. The cubic root of 52616665 is about 374.7207758456.

The spelling of 52616665 in words is "fifty-two million, six hundred sixteen thousand, six hundred sixty-five".